Pressure actuated valve



I1, 1939. Y I HUGHES 2,165,267

PRESSURE ACTUATED VALVE Filed Sept. 4, 1936 /2 g 6 If INVENIOR.

ATTORNEY.

Patented July 11, 1939 UNITED STATES v O F FI ranssunr: ACTUATED van'vri Ralph 0. Hughes, Anderson, lndr, assignorto Reynolds Gas. Regulator 00., Anderson} a corporation of- Indiana r Application September 4, 1936, Serial 2 Claims. (01. 137-153) This invention relates to an improved pressure actuated valve and particularly to a valve which is adapted to permit full flow of a gas through a conduit until the pressure from an independent 5 source reaches a predetermined maximum, at which time the valve will close, to open to full open position when the pressure in such independent source drops to a predetermined minimum. These therefore are the general objects of the present invention.

Another object of this invention is to provide a snap acting pressure controlled valve which will be of a simple construction, capable of being manufactured at a low cost, and at the same time will'be reliable in its operation over long periods of time.

Other objects of the present invention will become more apparent from the following description, reference being had to a preferred embodiment of the invention illustrated in the accompanying drawing. The essential features of the invention will be summarized in the claims.

Referring now to the drawing, wherein I have illustrated a valve constructed in accordance with my invention- Fig. 1 is a centrally located vertical section as indicated by the lines l-l on Fig. 3, and illustrates my improved valve mechanism in an open position;

Fig. 2 is a section taken in the same plane as Fig. 1, but illustrating the valve mechanism in a closed position; I

And Fig. 3 is a horizontal section as by the lines 33 on Fig. l.

Referring again to the drawing it will be seen that my improved valve comprises a hollow body I llhaving an inlet opening II and an outlet opening l2 which are separated by a wall which is provided with a valve opening it, provided 40 with the usual valve seat IS. A valve member l6, supported as hereinafter described, coacts with the seat to regulate the flow of gas from the inlet to the outlet openings of the valve body.

The lower end of the valve body is closed by a diaphragm I! made of a flexible material, as for instance, sheep skin which has been impregnated in the usual manner to render it impervious to gas. The diaphragm is secured in 50 position against the walls of the valve body by a hollow cap l8 which is secured to the valve body by suitable bolts l9.

The cap I8 is provided with an inlet opening 20 adapted to receive a conduit 2| to apply 55 gas pressure to the lower side of the diaphragm indicated central region.

from a source nd 1 dent of thesource lead-If ing to or from the valve mayor; if desiredfrom; the pressureleading from t h e outlet, opening i2.

Slidingly mounteaji i the (body in, i i' cross or wing 22. The travel] ofth ;wing.is,restricted.by. 5 shoulders 23 and "24' which coact with the ,top and bottom surfaces,. respectively,ioi the wing. The wing is securedflto' thef tiiaph'raginlay a stud 25, a washer 26 protecti ,theId fi-filiragmiin the; usual manner. f ,=l0

The valve member] is provided 21 which is secured to -a cage is as f0. by suitable screw-threads. f: y is open, as 'illustratedin' Fig." 1','suit'ab1e]leg I, which extend upwardly from tneflc'agaza, fpermit the free passag ga'" [irom' the}.inl et., 0. the outlet openingof valve; II I if, Q The valve mechanis I so arranged. thatam upward movement. of, the iaphrag'nidrawsthe valve member downwardly ontoits seat, wher Secured to" and extending upw rdly" from hes wing 2| is a camshapedfprong earn 301 which slidingly enters anjaxial opening 31 fintl'ie,. ca 25 28. The walls of thisbpening, intermediate its, ends, are undercut fto forni anjannulanrecessj 32, within whichis anendlesspoil spring .33,-' ;the ends of which ha've'been scurd together by welcl ing or any other' well' known oce'ss to forin a 30 ring having a normal internald ineterlwhicli is less than the damm '"the prong so; at'i'ts,

Assuming thevalve t fb'efinjan'open position, the various partsoiwthefjvalve will be inQtheQ35 positions illustratedijinQFig. I. When the ipr e '-,I; sure in the chamber, 40,. below thediaphragm, is suilicient to counteract' 'the,pressure offthe, spring 4| whichisinterposedibetweenlthe'wi 22 and the upper wall' liijo f fthe valve bguy prong 30 will'star't to move upwardly/When the thickest region 44 oflthegp rong reach a point slightly above Ithefhorizontal center the coil spring 33, the latterjbeing under ten will follow the inwardly sloping portions 45 the prong and snap thecage -"together with'the valve member downwardoiitb its seat, th''efr jelijr closing the valve.

From the foregoingdesciiption it will be seen that I have provided "a"simple siiap action valve which may be automaticallycontrolled froma source of pressure independentof 'the pr in the, line flowing .through' thexvalve -itself.

Having set forth the principles of my invention, and described and illustrated an embodiment thereot'ior practical use, what I claim and desire to secure by Letters Patent, is:

1. A pressure responsive valve comprising a valve body having inlet and outlet passages separated by a wall having a valve opening. a valve member adapted to open or close said opening. a stem secured to saidvalve member having an axially extending opening therein, a pressure responsive diaphragm, a cross mounted for vertical movement on said body and secured to said diaphragm, an axially extending cam carried by said cross and slidably extending into the opening in said stem, said cross acting to guide said cam for movement in an axial direction, means independent oi'said diaphragm and said valve member to limit the movement of said cross, resilient means carried by said, stem intermediate the ends of the opening therein and adapted and arranged to coact with said cam to move the valve member relative to said diaphragm, said cam coacting with the walls of the axial opening in said stem to guide the move-' ment of said stem. alid wherein said cam is arranged and adapted to permit a limited universal movement or said valve member to thereby insure seating of said valve. I

2. In a pressure responsive valve, a hollow body having inlet and outlet openings. separated by a valve seat, a diaphragm closing the lower end of said body and secured thereto by a hollow cap having an inlet opening to admit fluid pressure to the lower side of said diaphragm, a wing slidably mounted in said body above the diaphragm and guided for vertical movement by the 10 

